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/* $OpenBSD: control.c,v 1.30 2020/04/13 18:59:41 nicm Exp $ */
/*
* Copyright (c) 2012 Nicholas Marriott <nicholas.marriott@gmail.com>
* Copyright (c) 2012 George Nachman <tmux@georgester.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <event.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "tmux.h"
/* Write a line. */
void
control_write(struct client *c, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
file_vprint(c, fmt, ap);
file_print(c, "\n");
va_end(ap);
}
/* Control error callback. */
static enum cmd_retval
control_error(struct cmdq_item *item, void *data)
{
struct client *c = cmdq_get_client(item);
char *error = data;
cmdq_guard(item, "begin", 1);
control_write(c, "parse error: %s", error);
cmdq_guard(item, "error", 1);
free(error);
return (CMD_RETURN_NORMAL);
}
/* Control input callback. Read lines and fire commands. */
static void
control_callback(__unused struct client *c, __unused const char *path,
int read_error, int closed, struct evbuffer *buffer, __unused void *data)
{
char *line, *error;
struct cmdq_state *state;
enum cmd_parse_status status;
if (closed || read_error != 0)
c->flags |= CLIENT_EXIT;
for (;;) {
line = evbuffer_readln(buffer, NULL, EVBUFFER_EOL_LF);
if (line == NULL)
break;
log_debug("%s: %s", __func__, line);
if (*line == '\0') { /* empty line exit */
free(line);
c->flags |= CLIENT_EXIT;
break;
}
state = cmdq_new_state(NULL, NULL, CMDQ_STATE_CONTROL);
status = cmd_parse_and_append(line, NULL, c, state, &error);
if (status == CMD_PARSE_ERROR)
cmdq_append(c, cmdq_get_callback(control_error, error));
cmdq_free_state(state);
free(line);
}
}
void
control_start(struct client *c)
{
file_read(c, "-", control_callback, c);
if (c->flags & CLIENT_CONTROLCONTROL)
file_print(c, "\033P1000p");
}
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